webView.evaluateJavaScript("getLangs()", completionHandler : { (value, error) in
print(value as Any)
})
result
Optional(["English","Հայերեն","Русский"])
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Andrey Chernukha
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And the problem is? – Cristik Feb 28 '18 at 14:24
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i can get that array its only prints – Artur Harutyunyan Feb 28 '18 at 14:41
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And what do you want instead? You're calling `print`, what would you expect to happen? Common, please don't drop us one piece of information at a time, tell us the whole story. – Cristik Feb 28 '18 at 15:05
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Note that this method runs asynchronously. If you need to update your UI you need to do it inside the completion handler which runs on the main thread. – Leo Dabus Feb 28 '18 at 16:28
2 Answers
1
Use guard statement to unwrap optionals:
guard let array = value as? [String] else { return }
print(array)
guard creates the variable that can be accessed from outside its block. It is useful to unwrap a lot of Optionals.
Check this for more details.
Agent Smith
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@ArturHarutyunyan can you try replacing `[String]` with [AnyObject]!! – Agent Smith Feb 28 '18 at 14:23
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@ArturHarutyunyan what didn't happen? Are you trying to say that you're not getting values? – Agent Smith Feb 28 '18 at 14:42
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nothing worked for me, anyway I changed my script and use it another way, just calling a func with parap. – Artur Harutyunyan Mar 01 '18 at 07:03
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@ArturHarutyunyan What was the problem, Why nothing worked, what do you want to be done? your questions are not clear and your comments are not clear as well. – Agent Smith Mar 01 '18 at 07:05
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@ArturHarutyunyan Yeah you told that already, What's going wrong when doing that? – Agent Smith Mar 01 '18 at 07:09
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0
if let array = value as? [String]{ print(array) }// now you've got the array
Andrey Chernukha
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it means that this is not a string array (which is weird. from the description it looks like a string array) – Andrey Chernukha Feb 28 '18 at 14:26
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